let a={
    "data": {
        "data": [],
        "index": [],
        "xsize": 327,
        "ysize": 306,
        "lonMin": 119.83921,
        "lonMax": 120.66721,
        "latMin": 30.89208,
        "latMax": 31.58334,
        "thresholdRange": [-0.1,0.1],
        "thresholdDefault": -0.022,
        "scale": 0.01,
        "offset": 0,
        "statGonghu": 0,
        "statZhushanhu": 0,
        "statSouthCoast": 1,
        "statEastTaihu": 1,
        "statEastCoast": 1,
        "statMeilianghu": 0,
        "statWestCoast": 1,
        "statCenterLake": 1,
        "statWuxi": 0,
        "statSuzhou": 1,
        "statChangzhou": 0,
        "areaAll": 43.8,
        "areaHigh": 0,
        "areaMid": 0,
        "areaLow": 0,
        "areaWuxi": "0.0",
        "areaSuzhou": "43.8",
        "areaChangzhou": "0.0"
    },
    "dbTable": "taihu",
    "imagePath": "AQUA_MODIS_250_L2_20200405124500_061_00_taihu_algae_ndvi.tif",
    "jsonPath":
     "model/output/a6ce588b-ee2c-11e9-b63f-0242ac110008/20200404204541TERRA_MODIS_250_L2_20200321101500_061_00_taihu_algae_ndvi.json",
    "script": "report_gen_taihu.py"
}

let b=JSON.stringify(a)

console.log(b)